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Tytuł:
Effect of Laser Feeding on Heat Treated Aluminium Alloy Surface Properties
Autorzy:
Labisz, K.
Tański, T.
Janicki, D.
Borek, W.
Lukaszkowicz, K.
Dobrzański, L. A.
Powiązania:
https://bibliotekanauki.pl/articles/353371.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
manufacturing and processing
ceramic powder
laser surface treatment
aluminium alloys
HPDL laser
Opis:
In this paper are presented the investigation results concerning microstructure as well as mechanical properties of the surface layer of cast aluminium-silicon-copper alloy after heat treatment alloyed and/ or remelted with SiC ceramic powder using High Power Diode Laser (HPDL). For investigation of the achieved structure following methods were used: light and scanning electron microscopy with EDS microanalysis as well as mechanical properties using Rockwell hardness tester were measured. By mind of scanning electron microscopy, using secondary electron detection was it possible to determine the distribution of ceramic SiC powder phase occurred in the alloy after laser treatment. After the laser surface treatment carried out on the previously heat treated aluminium alloys, in the structure are observed changes concerning the distribution and morphology of the alloy phases as well as the added ceramic powder, these features influence the hardness of the obtained layers. In the structure, there were discovered three zones: the remelting zone (RZ) the heat influence zone (HAZ) and transition zone, with different structure and properties. In this paper also the laser treatment conditions: the laser power and ceramic powder feed rate were investigated. The surface laser structure changes in a manner, that there zones are revealed in the form of. This carried out investigations make it possible to develop, interesting technology, which could be very attractive for different branches of industry.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2A; 741-746
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of laser surface treatment on the quality of microstructure in recycled Al-Zn-Si cast alloy
Autorzy:
Tillova, E.
Durinikova, E.
Chalupova, M.
Radek, N.
Powiązania:
https://bibliotekanauki.pl/articles/111696.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
secondary cast alloy
laser surface treatment
microstructure
odlew stopu wtórnego
obróbka powierzchniowa laserowa
Opis:
Recycled Al-Zn-Si casting alloys can often be used in new cast products for mechanical engineering, in hydraulic castings, textile machinery parts, cable car components or big parts without heat treatment. Improved mechanical properties and favourable of recycled microstructure of Al-alloys can often significantly increase the lifetime of casting and reduce costs for fuel and reduction of environmental loading. The paper is focused on using one of possible technologies that provide increased mechanical properties of recycled aluminium cast alloys for automotive industry, and that is laser surface hardening. For study was used recycled AlZn10Si8Mg cast alloy. The effect of laser beam Nd: YAG lasers BLS 720 was evaluated with the laser power 50 W and 80 W on the surface of samples. The final microstructure of aluminium alloys depend on the laser process parameters. The changes of microstructure as a grain refinement of the microstructure after laser surface hardening was observed by using classical techniques of etching and deep etching with concentrated HCl. Microstructure was evaluated on an optical microscope Neophot 32 and SEM.
Źródło:
Production Engineering Archives; 2014, 2, 1; 26-32
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser modification of the materials surface layer - a review paper
Autorzy:
Kusiński, J.
Kac, S.
Kopia, A.
Radziszewska, A.
Rozmus-Górnikowska, M.
Major, B.
Major, L.
Marczak, J.
Lisiecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/201655.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lasers in Poland
laser surface heat treatment
laser melting
alloying
cladding
laser ablation
laser cleaning
laser shock processing (LSP)
laser texturing
multilayer coatings
Opis:
The state of laser processing in surface materials modification in Poland is reported, based on own experience, coworkers and coauthors results, as well the literature review. The curriculum concerning historical development of lasers and laser technology in Poland, laser-matter interaction, as well basis of different laser techniques applied in materials surface engineering (solid state hardening, melting, alloying, cladding, ablation, shot peening, cleaning and texturing) are reviewed, and compared with results of coauthors, as well with a wide range of Polish authors papers. Finally, it is concluded that overall state of research on laser application in surface engineering in Poland is well developed and still growing industrial application is observed.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 4; 711-728
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser heat treatment of nickel-based alloys – a review
Autorzy:
Kukliński, Mateusz
Szymański, Michał
Przestacki, Damian
Powiązania:
https://bibliotekanauki.pl/articles/94176.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
nickel
laser
heat treatment
surface
coating
Opis:
In this paper researches which focus on laser heat treatment of nickel-based alloys are reviewed. Studies published from 1970s until today are taken into consideration. Publications which focus on influence of laser thermal processing on surface layer condition both on solid materials and predeposited coatings are described. Laser technologies in which additional materials are delivered during the process are not considered. In order to focus on studies investigating microstructural changes resulting mainly from material remelting, laser shock processing is also disregarded.
Źródło:
Archives of Mechanical Technology and Materials; 2019, 39; 46-53
2450-9469
Pojawia się w:
Archives of Mechanical Technology and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formation of Hard Composite Layer on Tool Steel by Laser Alloying
Autorzy:
Bonek, M.
Powiązania:
https://bibliotekanauki.pl/articles/958195.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tool materials
surface treatment
laser
tribology
Opis:
Investigations include alloying the PMHSS6-5-3 steel surface layer with carbide and ceramic powders WC, VC, TiC, SiC, Si3N4 and Al2O3, using the high power diode laser (HPDL). Laser treatment is especially promising for solving contemporary surface engineering problems making it possible to focus precisely the delivered energy in the form of heat in the surface layer. The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, method on structure refinement and influence of these factors on the mechanical properties of surface layer, and especially on its abrasive wear resistance. The fine grained martensite structure is responsible for hardness increase of the alloyed layer. The tribological wear relationships were determined for laser treated surface layers, determining friction coefficient, and wear trace shape developed due to the abrasive wear of the investigated surfaces. Comparison of the laser treatment parameters and tribological properties of surface layer after remelting and alloying with hard particles of the PMHSS6-5-3 steel using the high power diode laser to obtain the optimum service properties is the outcome of the investigations carried out.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2A; 719-724
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Investigation of Properties of High-Speed Steel After Laser Surface Treatment
Autorzy:
Bonek, M.
Powiązania:
https://bibliotekanauki.pl/articles/353312.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
laser
surface
treatment
alloying
tool
steel
tribology
Opis:
The aim of this research paper is to present laser surface treatment technologies, investigation of properties of the HS6-5-3-8 high-speed steel \ alloying with ceramic particles using High Power Diode Laser. Selection of laser operating conditions is discussed, as well as beam face quality after remelting, hardness, micro hardness test, wear resistant. Remelting of the steel with introducing into liquid molten pool the alloying additions in the form of ceramic powders, causes significant increase of properties of surface layer of investigated steel in comparison to its analogical properties obtained through conventional heat treatment, depending on the laser beam power implemented for remelting. The increase of hardness of surface layer obtained throughout remelting and alloying with carbides by high power diode laser is accompanied by increase of tribological properties, when comparing to the steel processed with conventional heat treatment.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 227-233
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Modification of Solids by Extreme Ultraviolet and Plasma Treatment
Autorzy:
Bartnik, A.
Fiedorowicz, H.
Skrzeczanowski, W.
Czwartos, J.
Wachulak, P.
Jarocki, R.
Kostecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/1030617.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
laser plasma
photoionized plasma
surface treatment
nanostructures
Opis:
In this paper, results of surface modification, using a laser-produced plasma source of extreme ultraviolet, and the extreme ultraviolet induced low temperature plasmas, are presented. It was shown that irradiation of different materials by intense extreme ultraviolet pulses results in strong changes of the surface morphology. Examples of micro- and nanostructures obtained this way are presented. It was also demonstrated that a dual action of the radiation pulses and low temperature plasmas allows to modify a molecular structure of exposed materials.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 267-270
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on Improvement of Surface Properties of Low Carbon Steel Using Laser Cladding
Autorzy:
Kim, Cheol-Woo
Yoo, Hyo-Sang
Jeon, Jae-Yeol
Cho, Kyun-Taek
Choi, Se-Weon
Powiązania:
https://bibliotekanauki.pl/articles/2048888.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
laser cladding
vickers hardness
microstructure
surface treatment
Opis:
Laser cladding is a method that can be applied to repair the crack and break on the mold and die surfaces, as well as generate new attributes on the surface to improve toughness, hardness, and corrosion resistance. It is used to extend the life of the mold. It also has the advantages of superior bonding strength and precision coating on a local area compared with the conventional thermal spraying technology. In this study, we investigated the effect of cladding on low carbon alloy steel using 18%Cr-2.5%Ni-Fe powder (Rockit404), which showed high hardness on the die surface. The process conditions were performed in an argon atmosphere using a diode laser source specialized for 900-1070 nm, and the output conditions were 5, 6, and 10 kW, respectively. After the cladding was completed, the surface coating layer’s shape, the hardness according to the cross-section’s thickness, and the microstructure were analyzed.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 1033-1036
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of laser surface treatment on structure and mechanical properties aluminium Alloy enac-AlMg9
Autorzy:
Pakieła, W.
Dobrzański, L. A.
Labisz, K.
Tański, T.
Basa, K.
Roszak, M.
Powiązania:
https://bibliotekanauki.pl/articles/355852.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
laser
surface treatment
laser feeding
composite layer
wear resistance
aluminium alloys
Opis:
The effect of laser surface treatment on structure and mechanical properties aluminium Alloy enac-AlMg9 In this work, the influence of a high power diode laser surface treatment on the structure and properties of aluminium alloy has been determined. The aim of this study was to improve the mechanical and tribological properties of the surface layer of the aluminium alloy by simultaneously melting and feeding tungsten carbide particles into the molten pool. During the process was used high-power diode laser HPDL. In order to remelt the aluminium alloy surface the HPDL laser of 1.8, 2.0 and 2.2 kW laser beam power has been used. The linear laser scan rate of the beam was set 0.5 em's. In order to protect the liquid metal during laser treatment was used argon. As a base material was used aluminium alloy ENAC -AlMg9. To improve the surface mechanical and wear properties of the applied aluminium alloy was used biphasic tungsten carbide WC/W2C. The size of alloying powder was in the range 110-210 μm. The ceramic powder was introduced in the remelting zone by a gravity feeder at a constant rate of 8 g/m.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1343-1350
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The application of laser texturing in surface layer patterning of the combustion engines elements
Autorzy:
Napadłek, W.
Woźniak, A.
Chrzanowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/243803.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
laser ablation micro-treatment
surface layer
microstructure
micro-oil containers
laser texturing
Opis:
In this paper, selected examples of the laser texturing of the surface layer patterning of the elements of the combustion engines were presented. A laser oil micro-container fabrication method was presented. Finishing cylinder liner, spigot of the camshaft, spigot of the crankshaft, rod and piston pin of the combustions engine were patterned. Laser patterning was done with the Nd: YAG laser with wavelength of λ=1064 nm. The manufactured micro-containers provide better lubrication of the friction associations. The conducted experiments allowed obtaining very regular surface texture what was found to be advantageous to the tribological processes and decrease of the wear of the frictional association in the combustions engines. Micro-bowls and micro-grooves were formed on the selected elements of the crank-piston elements and timing gear elements, including: the main spigots and rod spigots of the crankshaft, side surfaces of the base and the connecting rod head, piston pin and peg of the camshaft of the ZI type 126A1 engine. Textured elements of the piston-rod system and the camshaft were then successfully applied in a real object in so-called “cold ignitions” in low temperature chamber. With the use of laser ablation texturing, at optimized experimental parameters, it is possible to form on the piston-rod and timing gear elements oil micro-containers with varied shapes and surface coverage. It allows improving the association conditions in these systems, especially due to the formation of oil microfilm, which efficiently separates mentioned elements even while under high thermal, heat and mechanical load.
Źródło:
Journal of KONES; 2015, 22, 1; 235-242
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Additive manufacturing of polyether ether ketone – PEEK parts with surface roughness modification by a laser beam
Autorzy:
Krolikowski, Marcin
Przestacki, Damian
Chwalczuk, Tadeusz
Sobolewska, Ewa
Tomasik, Malgorzata
Powiązania:
https://bibliotekanauki.pl/articles/100003.pdf
Data publikacji:
2020
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
additive manufacturing
PEEK
prosthetic implant
laser beam
surface treatment
Opis:
The physicochemical properties of polyether ether ketone (PEEK) allow to use this material for prosthetic restorations applied in implant prosthetics. So far, such attempts have been made in the technology of milling rough material solids of this polymer, but the surface quality was unsatisfactory. Therefore, the production of these materials by additive manufacturing techniques was proposed and an attempt was made to shape their surface using a laser. The possibilities of the method are determined in the paper and preliminary works related to the product surface shaping are presented. The process of making individual prosthetic restorations from the PEEK material by the additive method together with the technology of laser modification of the geometric structure of the material surface for applications in implant prosthetic treatment of patients is innovative and has not been used so far.
Źródło:
Journal of Machine Engineering; 2020, 20, 3; 117-124
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of dodecanol on wetting behavior of superhydrophobic surfaces
Autorzy:
Sayfutdinova, A. R.
Emelyanenko, A. M.
Boinovich, L. B.
Powiązania:
https://bibliotekanauki.pl/articles/109392.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
surface modification
laser treatment
anodic etching
superhydrophobicity
wettability
nanostructured surfaces
Opis:
Digital processing of the optical image of a sessile droplet was used to study the influence of dodecanol vapors and condensate on the wettability of superhydrophobic coatings by water. Two types of coatings with very different morphologies were used to estimate the stability of the superhydrophobic state in the presence of dodecanol at different regimes of interaction of tested superhydrophobic coatings with dodecanol vapors, including preliminary condensation of dodecanol inside the substrate pores/grooves at different temperatures, a short-term contact of dodecanol vapor with the superhydrophobic coating with the preliminary deposited water droplets and, finally, a long-term contact between substrate with deposited water droplets and the vapor phase saturated with dodecanol vapor. The set of experimental data indicate only minor variations of water contact and roll-off angles for all regimes studied. Such wettability behavior evidences good persistence of superhydrophobic state in conditions of contact with long-chain alcohol vapors.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 1; 131-141
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface treatment for improvement of coefficient of friction on sliding surfaces
Autorzy:
Tanabe, I.
Soe, Y. H.
Iyama, T.
Powiązania:
https://bibliotekanauki.pl/articles/99784.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
tribology
friction
micromachine
laser machining
surface treatment
DLC
stable behavior
Opis:
Recently, many micro structure products are used for compact, high precision and others functions in the field of measuring instruments, medical instruments, information processing devices and so on. However, in the small sliding parts of these products, the surface contact pressure becomes lowered and then, higher adhesive force occurs, resulting larger coefficient of friction. On the other hand, in the field of machine tools, lubrication free sliding parts are also demanded for eco-friendly. In this study, the surface treatment for improvement of coefficient of friction for both light load and heavy load applications are investigated. When laser ray is applied on stainless steel surface, CrO2 layer with small concaves like dimple is generated. This CrO2 layer is used in light load applications. Next, TiAlN and DLC coating are being used on cutting tools for reducing coefficient of friction and cutting heat. Therefore, these coating materials are used for heavy load and oil free applications. The improvement of coefficient of friction and life of coating are investigated by experiments. It was concluded from the results that; (1) Coefficient of friction for light load application can be reduced by coating CrO2 layer. (2) Coefficients of friction for heavy load application were reduced by coating TiAlN and DLC layer. (3) Life of both CrO2 and DLC layers are sufficiently long for practical applications at light load and heavy load respectively.
Źródło:
Journal of Machine Engineering; 2012, 12, 1; 7-17
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wytwarzanie powierzchni niejednorodnych technologią elektroiskrową i laserową
Manufacture of heterogeneous surfaces by electro spark deposition and laser beam
Autorzy:
Antoszewski, B.
Radek, N.
Powiązania:
https://bibliotekanauki.pl/articles/290003.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
powierzchnia niejednorodna
obróbka elektroiskrowa
obróbka laserowa
heterogeneous surface
electro-spark deposition
laser treatment
Opis:
W artykule przedstawiono wyniki badań powłok Cu-Mo i Cu-Ti nakładanych elektroiskrowo, a następnie modyfikowanych wiązką laserową. Powłoki były nakładane na stal St3S. Badano mikrotwardość oraz makrogeometrię powierzchni powłok.
The paper shows results of laser treatment of electro spark Cu-Mo and Cu-Ti coatings. The base material was mild steel. Microhardness and macrogeometry of the surface of layers was investigated.
Źródło:
Inżynieria Rolnicza; 2005, R. 9, nr 2, 2; 23-30
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Evaluation of the use of Laser-Vibration Melting to Increase the Surface Roughness of Metal Objects
Analiza możliwości wykorzystania laserowo-wibracyjnego przetapiania do zwiększania chropowatości powierzchni elementów metalowych
Autorzy:
Grabas, B.
Powiązania:
https://bibliotekanauki.pl/articles/353962.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
laser melting
surface roughness
laser treatment
vibration
nucleate boiling
przetapianie laserowe
chropowatość powierzchni
obróbka laserowa
wibracja
zarodkowanie termiczne
Opis:
This paper presents preliminary, experimental results of a new, hybrid method of increasing the surface roughness of metal objects. In this new approach, metal objects are melted with a mobile laser beam while they are being rotated. A vibration generator provides circular vibrations with an amplitude of 3 mm, and the vibration plane is perpendicular to the moving laser beam. The melting tests were performed using flat carbon steel samples at a predetermined frequency of circular vibrations. The effects of laser power and laser beam scanning velocity on the melted shapes were studied. All laser melting procedures were performed at a vibration frequency of 105 Hz. The melted samples were subjected to microscopic evaluation and the Ra parameter, which characterises mean roughness, was measured using a profilometer. Melting metal samples with physically smooth surfaces (Ra = 0.21 µm) resulted in surface structures of varied roughness values, with Ra ranging from 5 µm to approximately 58 µm. The studies were undertaken to employ this technology for the purpose of passive heat exchange intensification of heating surfaces in practical applications.
W artykule zaprezentowano wstępne wyniki eksperymentalne nowej hybrydowej metody zwiększania chropowatości powierzchni elementów metalowych. W metodzie tej wykorzystuje się przetapianie ruchomą wiązką laserową elementów metalowych poddanych równocześnie wibracji kołowej. Generator drgań wytwarza wibrację kołową o amplitudzie 3 mm, a płaszczyzna wibracji jest prostopadła do osi przemieszczającej się wiązki laserowej. Próbom przetapiania przy ustalonej częstotliwości wibracji kołowej poddano płaskie próbki ze stali węglowej. Badano wpływ mocy laserowej oraz prędkości skanowania wiązki laserowej na kształt przetopień. Wszystkie przetopienia laserowe wykonywano przy częstotliwości wibracji f = 105 Hz. Otrzymane przetopy poddane zostały obserwacjom mikroskopowym oraz pomiarom profilometrycznym parametru Ra charakteryzującego średnią chropowatość. W wyniku przetapiania technicznie gładkich powierzchni próbek metalowych (Ra = 0,21 µm), uzyskano struktury o zróżnicowanych chropowatościach, dla których Ra mieścił się w przedziale od ok. 5 µm do ok. 58 µm. Badania prowadzono pod kątem potencjalnych możliwości stosowania tej technologii do pasywnej intensyfikacji wymiany ciepła powierzchni płyt grzewczych.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 1; 33-39
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
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